"The paper analyzes aggregate idiosyncratic volatility (IV) in G7 countries using recent data up to 2003. Consistent with Campbell, Lettau, Malkiel, and Xu's (2001) results obtained from U.S. data over the period 1962-97, we find that the equal-weighted IV exhibits a significant upward trend in...

In this paper we examine dynamic relationships among wheat prices from five countries for the years 1981-1999. Error correction models and directed acyclic graphs are employed with observational data to sort-out the dynamic causal relationships among prices from major wheat producing regions:...